<template>
	<view class="login-container">
		<uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
		<button type="primary" class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
		<text class="tips-text">登录后尽享更多权益</text>
	</view>
</template>

<script>
	import { mapMutations,mapState } from 'vuex'
	export default {
		name: "my-login",
		data() {
			return {

			};
		},
		computed: {
		  ...mapState('m_user', ['redirectInfo'])
		},
		methods: {
			...mapMutations('m_user',['updateUserInfo','updateToken', 'updateRedirectInfo']),
			//用户授权后获取用户信息
			getUserInfo(e) {
				console.log(e);	
				if (e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权！')
				this.updateUserInfo(e.detail.userInfo)
				this.getToken(e.detail)
			},
			async getToken(info) {
			  // 获取 code 对应的值
			  const [err, res] = await uni.login().catch(err => err)
			
			  if (err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败！')
			
			  // 准备参数
			  const query = {
			    code: res.code,
			    encryptedData: info.encryptedData,
			    iv: info.iv,
			    rawData: info.rawData,
			    signature: info.signature
			  }
			
			  const { data: loginResult } = await uni.$http.post('/api/public/v1/users/wxlogin', query)
			  if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')
			
			  // 直接把 token 保存到 vuex 中
			  this.updateToken(loginResult.message.token)
			  this.navigateBack()
			},
			navigateBack() {
			  if (this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
			    uni.switchTab({
			      url: this.redirectInfo.from,
				  // 成功后清空存储的地址
			      complete: () => {
			        this.updateRedirectInfo(null)
			      }
			    })
			  }
			}
		}
	}
</script>

<style lang="scss">
	.login-container {
		height: 750rpx;
		background-color: #F8F8F8;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		position: relative;
		overflow: hidden;
		&::after {
			content: '';
			display: block;
			width: 100%;
			height: 40px;
			background-color: white;
			position: absolute;
			bottom: 0;
			left: 0;
			border-radius: 100%;
			transform: translateY(50%);
		}
		.btn-login{
			width: 90%;
			border-radius: 100px;
			margin: 15px 0;
			background-color: #C00000;
		}
		.tips-text{
			font-size: 12px;
			color: gray;
		}
	}
</style>